Numeric Datatype
The following Numeric types are supported:
_integer |
A 64 bit signed integer type |
_positive |
A 64 bit unsigned integer type |
_float |
A double-precision 64-bit IEEE 754 floating point number, restricted to finite values |
Accuracy
Xapiand handles numerical ranges by trie indexing numerical values in a special string-encoded format with variable precision.
All numerical (and also dates, times and geospatial) values are converted to lexicographic sortable string representations and indexed with different precisions. A range of values is divided recursively into multiple intervals for searching: The center of the range is searched only with the lowest possible precision in the trie, while the boundaries are matched more exactly.
Default accuracy in numeric fields is:
[ 100, 1000, 10000, 100000, 1000000, 100000000 ]
Parameters
The following parameters are accepted by Numeric fields:
_accuracy |
Array with the accuracies to be indexed. (Array of numeric values). |
_value |
The value for the field. (Only used at index time). |
_index |
The mode the field will be indexed as: "none", "field_terms", "field_values", "field_all", "field", "global_terms", "global_values", "global_all", "global", "terms", "values", "all". (The default is "field_all"). |
_slot |
The slot number. (It’s calculated by default). |
_prefix |
The prefix the term is going to be indexed with. (It’s calculated by default) |
_weight |
The weight the term is going to be indexed with. |